Photoionization by a bichromatic field: Adiabatic theory

V. A. Pazdzersky, V. A. Yurovsky

Research output: Contribution to journalArticlepeer-review


Atom photoionization by the superposition of a fundamental field and its second harmonic is considered. The finite analytical expressions for the photoionization probability are obtained using the adiabatic approximation. They demonstrate that the photoelectron angular distribution has a polar symmetry when the electrical field strength has a maximal polar asymmetry and the distribution is asymmetrical when the field is symmetrical. A strict proof of the polar symmetry of the photoionization probability in the case of the electrical field with maximal asymmetry is deduced using the Keldysh-Faisal-Reiss theories. The obtained results are in agreement with the experimental data available.

Original languageEnglish
Pages (from-to)632-640
Number of pages9
JournalPhysical Review A
Issue number1
StatePublished - 1995
Externally publishedYes


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